What are atria?
- The heart is divided into four chambers that are connected by valves. The upper two chambers of the heart are called the left atrium and the right atrium.
Image courtesy of MedValet |
Function:
- Right Atrium: Receives blood returning to the heart from the superior and inferior vena cava.
- Left Atrium: Receives blood returning to the heart from the pulmonary veins.

